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mindy87Jul 27, 2025
What to do if my Viessmann Vitocrossal 100 burner is in a fault state?
- EEdward LopezJul 27, 2025
If the burner is in a fault state, it could be due to several reasons: * Ionisation current too high, too low or outside the permissible range during calibration. In this case, check the gap between the ionisation electrode and burner gauze assembly, contamination on the electrode, connecting cable and plug-in connections. If you have open flue operation, prevent high levels of dust in the combustion air. Also, check the gas supply (gas pressure and gas flow switch), gas train and connecting cable. Check flue system and remove flue gas recirculation if required. * Heat transfer too low during calibration or temperature limiter has shut down. Ensure adequate heat transfer. After checking these possible causes, press the reset button R.
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